Sectional lining for fire-bowls.



0. M. BIRELEY.

SECTIONAL LINING FOR FIRE BOWLS.

- APPLICATION FILED MAY 22.15MB.

Patented Sept. 26,1916;

- peas Fakrm: Mum's PETERS m. PN070-L11Nn..wAsHVNOl ON. u. c

sections 6.

' ITII OTTO M. BIRELEY, OF INDIANAPQLIS, INDIANA, ASSIGNOR INDIANAPOLIS,INDIANA, DOING BUSIN ING COMPANY.

T0 HARRY RYBOLT, OF UNDER THE NAME OF RYBOLT HEAT- SECTIONAL LINING FORFIRE-BOWLS.

Application filed May 22, 1916.

and stoves, and the object of the invention is to provide a lining inseparately removable sections so constructed as to reduce the tendencyto warp and burn out to a m1n1-.

mum, and always easily removable when damaged by the heat, and whichwill pro tect the fire pot, prolong the life of the furnace andfacilitate and cheapen repairs to that part which is subject to thegreatest deterioration.

I accomplish the above, and other objects which will hereinafter appeal,by the mechanism illustrated in the accompanying drawing, in which-Figure 1 is a vertical section of a fire pot and lining thereforembodying my inven tion, the section being on the line 11 of Fig. 2.Fig. 2 is a top plan view of same. Fig. 3 is an elevation looking at theinner side of one of the fire pot sections and Fig. 4 is a rear oroutside view of the same.

Like characters of reference indicate like parts throughout the severalviews of the drawing.

The walls 5 of the fire pot are in the form of an inverted hollowtruncated cone deeply corrugated up and down inside and outside toincrease the strength and radiating surface of the pot and to providefree straight inside air passages at equal distances all around. It ispreferably in two horizontally divided members as shown to reduce thechances of. cracking under the action of the heat to a minimum.

The fire pot as above described is lined with a cast iron lining invertically divided These sections taper clownwardly and have beveledmeeting edges which hold them in'the downwardly tapering fire potwithout any other support than is afforded by the walls of the pot afterthe sections are once assembled. To aid in the assembly and also toprevent the rising of one or a group of the sections after theySpecification of Letters Patent.

Patented Sept. 26, 1916.

Serial No. 99,181.

have become somewhat warped and thereby loosened or loosened by theexpansion of the fire pot, particularly by the shaking of the grate barsto remove ashes while the fire pot is full of cinders and coal, Iprovide a notch 7 in one of the vertical edges of the section andprovide a h1g8 of corresponding di mensions on the other edge. Inassembly the lug 8 of one lining section enters the notch 7 in thesection next to it, in the manner shown in the drawing, thereby lockingthe sections together against any pomible individual longitudinalmovement. The weight of the lining as a whole and its tapering shapewhich fits in the corresponding taper of the interior of the fire potkeep the lining in position in the pot.

To equalize the expansion between the lining and the fire potI providecirculationslots 9 between each pair of sections, formed by notching theedge of each section in half the width of the whole opening, leaving theedges of the sections near the tops and bottoms of the latter intact asshown.

As the hottest part of the fire is generally midway of the height of thefire pot I thicken the lining sections gradually from each end towardtheir rniddles as shown, the increased thickness being all on the insideof the section which increases the lower inside taper causing the ashesto discharge while leaving the outside straight up and down; and toinsure a circulation of air between the lining and the fire pot wherethe walls of the corrugations in the latter would otherwise contactv thelining I form the lining with bottom'lugs 10 which hold it away as shownin Fig. 1. To additionally ventilate the top of the. lining which ismore exposed to the heat than the bottom portions, I provide openings11.

It is obvious that one or more of the sections of the lining may bereadily renewed when necessary, which will be less expensive than tosubstitute an entire new lining.

While I have described my invention with more or less minuteness asregards details of construction and arrangement and as being embodied incertain precise forms, I do not desire to be limited thereto unduly orany more than is pointed out .in the claims. On the contrary, Icontemplate all proper changes in form, construction and arrangement,the omission of immaterial elements and the substitution of equivalentsas circumstances may suggest or as necessity may render expedient.

I claim 1. The combination with a downwardly tapering corrugated firepot, of a cast iron lining in a plurality of separate downwardlytapering sections said sections having spaced apart lugs next to thefire pot at their lower ends to bear against the corrugations of the potand establish an air space, said lining as a whole being held fromdownward movement by the taper of the pot, and interlocking meansbetween the sections to keep them from being independently raised.

2. The combination with a downwardly tapering corrugated fire pot, of acast iron lining in a plurality of separate downwardly tapering sectionshaving elongated slots at between them and having spaced the jointsapart lugs next to the fire pot at their lower ends to bear against thecorrugations of the pot and establish an air space, each section havinga lug extending across one of said slots and entering a notch in theadjacent:

section, said lining as a whole being held from downward movement by thetaper of the pot.

3. An inverted truncated conical bowl, a

joints between them and each sectionhaving alug extending across one ofsaid slots and entering a notch in thead acent section.

In witness whereof, I have hereunto set my hand and seal atIndianapolis, Indiana, this 8th day nine hundred and sixteen.

OTTO BIBELEY. [n s] Copies of this patent maybe obtained for five cents,each, by addressing the, Commissioner of Patents, Washington, D. G.

of May, A. D.OI1G thousand

